248 lines
8.2 KiB
C++
248 lines
8.2 KiB
C++
/*============================================================================
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CMake - Cross Platform Makefile Generator
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Copyright 2012 Stephen Kelly <steveire@gmail.com>
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Distributed under the OSI-approved BSD License (the "License");
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see accompanying file Copyright.txt for details.
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This software is distributed WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the License for more information.
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============================================================================*/
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#include "cmGeneratorExpressionEvaluator.h"
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#include "cmAlgorithms.h"
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#include "cmGeneratorExpression.h"
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#include "cmGeneratorExpressionDAGChecker.h"
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#include "cmGeneratorExpressionParser.h"
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#include "cmGlobalGenerator.h"
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#include "cmLocalGenerator.h"
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#include "cmMakefile.h"
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#include "cmSourceFile.h"
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#include <cmsys/String.h>
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#include <assert.h>
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#include <errno.h>
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#include "cmGeneratorExpressionNode.h"
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GeneratorExpressionContent::GeneratorExpressionContent(
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const char *startContent,
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size_t length)
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: StartContent(startContent), ContentLength(length)
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{
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}
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std::string GeneratorExpressionContent::GetOriginalExpression() const
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{
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return std::string(this->StartContent, this->ContentLength);
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}
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std::string GeneratorExpressionContent::ProcessArbitraryContent(
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const cmGeneratorExpressionNode *node,
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const std::string &identifier,
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cmGeneratorExpressionContext *context,
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cmGeneratorExpressionDAGChecker *dagChecker,
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std::vector<std::vector<cmGeneratorExpressionEvaluator*> >::const_iterator
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pit) const
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{
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std::string result;
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const
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std::vector<std::vector<cmGeneratorExpressionEvaluator*> >::const_iterator
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pend = this->ParamChildren.end();
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for ( ; pit != pend; ++pit)
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{
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std::vector<cmGeneratorExpressionEvaluator*>::const_iterator it
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= pit->begin();
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const std::vector<cmGeneratorExpressionEvaluator*>::const_iterator end
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= pit->end();
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for ( ; it != end; ++it)
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{
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if (node->RequiresLiteralInput())
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{
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if ((*it)->GetType() != cmGeneratorExpressionEvaluator::Text)
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{
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reportError(context, this->GetOriginalExpression(),
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"$<" + identifier + "> expression requires literal input.");
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return std::string();
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}
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}
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result += (*it)->Evaluate(context, dagChecker);
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if (context->HadError)
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{
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return std::string();
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}
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}
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if ((pit + 1) != pend)
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{
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result += ",";
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}
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}
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if (node->RequiresLiteralInput())
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{
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std::vector<std::string> parameters;
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parameters.push_back(result);
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return node->Evaluate(parameters, context, this, dagChecker);
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}
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return result;
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}
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std::string GeneratorExpressionContent::Evaluate(
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cmGeneratorExpressionContext *context,
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cmGeneratorExpressionDAGChecker *dagChecker) const
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{
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std::string identifier;
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{
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std::vector<cmGeneratorExpressionEvaluator*>::const_iterator it
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= this->IdentifierChildren.begin();
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const std::vector<cmGeneratorExpressionEvaluator*>::const_iterator end
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= this->IdentifierChildren.end();
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for ( ; it != end; ++it)
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{
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identifier += (*it)->Evaluate(context, dagChecker);
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if (context->HadError)
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{
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return std::string();
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}
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}
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}
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const cmGeneratorExpressionNode *node =
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cmGeneratorExpressionNode::GetNode(identifier);
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if (!node)
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{
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reportError(context, this->GetOriginalExpression(),
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"Expression did not evaluate to a known generator expression");
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return std::string();
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}
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if (!node->GeneratesContent())
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{
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if (node->NumExpectedParameters() == 1
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&& node->AcceptsArbitraryContentParameter())
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{
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if (this->ParamChildren.empty())
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{
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reportError(context, this->GetOriginalExpression(),
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"$<" + identifier + "> expression requires a parameter.");
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}
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}
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else
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{
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std::vector<std::string> parameters;
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this->EvaluateParameters(node, identifier, context, dagChecker,
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parameters);
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}
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return std::string();
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}
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std::vector<std::string> parameters;
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this->EvaluateParameters(node, identifier, context, dagChecker, parameters);
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if (context->HadError)
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{
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return std::string();
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}
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return node->Evaluate(parameters, context, this, dagChecker);
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}
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std::string GeneratorExpressionContent::EvaluateParameters(
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const cmGeneratorExpressionNode *node,
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const std::string &identifier,
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cmGeneratorExpressionContext *context,
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cmGeneratorExpressionDAGChecker *dagChecker,
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std::vector<std::string> ¶meters) const
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{
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const int numExpected = node->NumExpectedParameters();
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{
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std::vector<std::vector<cmGeneratorExpressionEvaluator*> >::const_iterator
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pit = this->ParamChildren.begin();
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const
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std::vector<std::vector<cmGeneratorExpressionEvaluator*> >::const_iterator
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pend = this->ParamChildren.end();
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const bool acceptsArbitraryContent
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= node->AcceptsArbitraryContentParameter();
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int counter = 1;
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for ( ; pit != pend; ++pit, ++counter)
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{
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if (acceptsArbitraryContent && counter == numExpected)
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{
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std::string lastParam = this->ProcessArbitraryContent(node, identifier,
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context,
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dagChecker,
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pit);
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parameters.push_back(lastParam);
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return std::string();
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}
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else
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{
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std::string parameter;
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std::vector<cmGeneratorExpressionEvaluator*>::const_iterator it =
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pit->begin();
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const std::vector<cmGeneratorExpressionEvaluator*>::const_iterator end =
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pit->end();
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for ( ; it != end; ++it)
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{
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parameter += (*it)->Evaluate(context, dagChecker);
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if (context->HadError)
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{
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return std::string();
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}
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}
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parameters.push_back(parameter);
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}
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}
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}
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if ((numExpected > cmGeneratorExpressionNode::DynamicParameters
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&& (unsigned int)numExpected != parameters.size()))
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{
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if (numExpected == 0)
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{
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reportError(context, this->GetOriginalExpression(),
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"$<" + identifier + "> expression requires no parameters.");
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}
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else if (numExpected == 1)
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{
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reportError(context, this->GetOriginalExpression(),
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"$<" + identifier + "> expression requires "
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"exactly one parameter.");
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}
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else
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{
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std::ostringstream e;
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e << "$<" + identifier + "> expression requires "
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<< numExpected
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<< " comma separated parameters, but got "
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<< parameters.size() << " instead.";
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reportError(context, this->GetOriginalExpression(), e.str());
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}
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return std::string();
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}
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if (numExpected == cmGeneratorExpressionNode::OneOrMoreParameters
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&& parameters.empty())
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{
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reportError(context, this->GetOriginalExpression(), "$<" + identifier
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+ "> expression requires at least one parameter.");
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}
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if (numExpected == cmGeneratorExpressionNode::OneOrZeroParameters
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&& parameters.size() > 1)
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{
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reportError(context, this->GetOriginalExpression(), "$<" + identifier
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+ "> expression requires one or zero parameters.");
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}
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return std::string();
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}
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GeneratorExpressionContent::~GeneratorExpressionContent()
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{
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cmDeleteAll(this->IdentifierChildren);
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std::for_each(this->ParamChildren.begin(), this->ParamChildren.end(),
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cmDeleteAll<std::vector<cmGeneratorExpressionEvaluator*> >);
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}
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